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Postfix日常维护队列管理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...队列：
一般是先用mailq查看队列里的邮件，找到对应的id，然后用postsuper -d来删除。
例如id是0EAF3A9B 那么postsuper -d 0EAF3A9B
postsuper -d ALL 删除所有邮件
显示信件列表：postqueue -p
显示信件內容：postcat -q Queue_ID
刪除各別信件...
单页web应用（SPA）的简单介绍 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...url中#号后面的部分。
<a href="target">go target</a>
......
<div id="target">i am target place</div>
点击a链接，文档会滚动到id为target的div的可视区域上面去。hash除了这个功能还有另一一种含义：指导浏览器的行为但不上传到服务器。大家...
C++简练易用的线程池(threadpool)及上下文隔离的无锁线程池(isolated_threa...
...队列后面
(*task)();
});
}
#ifdef THREADPOOL_AUTO_GROW
if (_idlThrNum < 1 && _pool.size() < THREADPOOL_MAX_NUM)
addThread(1);
#endif // !THREADPOOL_AUTO_GROW
_task_cv.notify_one(); // 唤醒一个线程执行
return future;
}
//......
// 执行任务
while (_run)
{...
How to change fontFamily of TextView in Android
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I saw a variant called "black small caps" in the roboto specimen book, but I don't manage to use it. Using android:fontFamily="sans-serif-black-small-caps" doesnt work. Does someone know?
– tbruyelle
Ma...
Resizing an image in an HTML5 canvas
...nvas>
</body>
</html>
My createImage function is called once when the document is loaded and after that it is called every time the window receives a resize event.
I tested it in Chrome 6 and Firefox 3.6, both on the Mac. This "technique" eats processor as it if was ice cr...
Select statement to find duplicates on certain fields
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http://support.microsoft.com/kb/139444
There should be a criterion for deciding how you define "first rows" before you use the approach in the link above. Based on that you'll need to use an order by clause and a sub query if needed. If you can post some sample data, it would really help.
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Alter a MySQL column to be AUTO_INCREMENT
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ALTER TABLE document MODIFY COLUMN document_id INT auto_increment
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Get query string parameters url values with jQuery / Javascript (querystring)
...d way to write a jQuery extension to handle query string parameters? I basically want to extend the jQuery magic ($) function so I can do something like this:
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Check if a given Type is an Enum
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@AndrewWhitaker: I figured that since the method is called CanConvert, it will check for multiple different possible conversions, not just if it's an enum. Otherwise you may as well just use the IsEnum property itself.
– Ry-♦
Nov 8 '11 ...
PHP Regex to get youtube video ID?
Can someone show me how to get the youtube id out of a url regardless of what other GET variables are in the URL.
19 Answer...